/Engine/Source/Runtime/Landscape/Classes/Materials/MaterialExpressionLandscapeLayerWeight.h
class UMaterialExpressionLandscapeLayerWeight : public [UMaterialExpression](API\Runtime\Engine\Materials\UMaterialExpression)
FExpressionInpu...
Base
FVector
ConstBase
Only used if Base is not hooked up
FExpressionInpu...
Layer
FName
ParameterName
float
PreviewWeight